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Your cart is empty. 1803BK 1803B Low Voltage DC Motor Speed Controller
🌠 PWM DC motor speed controller, with switch function, with start-up LED light.
🌠 Input voltage: DC 2.2V-15V; output voltage: 1.8V-15V.
🌠 Maximum continuous output current: 2A.
🌠 Maximum output power: 30W.
🌠 Do not directly connect the DC power supply of the DC motor speed controller to household 220V AC power.
🌠 The product has its own 2A self-recovery fuse, which will automatically disconnect when the current is too high, and will automatically recover after the fuse cools down.
🌠 Please use an appropriately rated fuse (rated slightly higher than your expected maximum current) to ensure safe operation.
packing list
2 X 1803BK 1803B Low Voltage DC Motor Speed Controller
Brian W.
2025-08-15 18:32:31
I needed to control fan speed of a PC fan in a DIY project. These worked perfectly. Didn't achieve the full range of the knob as the fan required a minimum amount of voltage to run but worked as expected.
To Protect the Innocent
2025-08-08 10:18:26
In an RV the range hood vent fan runs on DC power. None of them have a variable speed fan. That's annoying because it's really easy to control a DC fan. This pwm fan controller is just the ticket. Just drill a 5/16 hole in the sheet metal to mount the knob. This controller is good for up to 2 amps but my vent uses about 1 amp. It has an on board red light that grows in intensity.As you crank the knob but mine is hidden behind the panel anyway.This controller is intended for a dc motor but it can be used for led lights as well.
U2pilot
2025-07-18 14:57:54
I grabbed these because the motor turning our disco ball spins way to fast. It’s a 3v DC motor. This little unit is small, acts as an on/off switch and I can regulate the ball from about 2 rpm to nearly 12. Just what the doctor ordered. I’ve used units like this before on other projects but this is the smallest I’ve had and works just fine and the price was reasonable.
Norty glover
2025-07-09 12:21:33
One of of the two units was bad. I used it to make my rv range fan variable speed. Easy to adapt existing wiring to wire in to the PWM unit.The defective unit did not vary the voltage and only ran off or full speed.
MamaT
2025-07-05 17:18:02
Some has stated that they don't work. Well the ones I received work as they are intended. No problem at all.
Turtle
2025-06-24 12:52:10
I'm using one of these to replace a burned out PWM on a magnetic lab stirrer to mix hobby paints. It does great at high speeds, but really struggles at low speed. Which kinda sucks because higher speed can introduce air & create almost a frothy paint.Anyway, easy to use & does the job. Unless you're looking for low end (slow) speed. I plan to try a lower powered power supply & see if that helps. I'll update when I try it.
Dawn Armbrest
2025-02-24 19:15:36
This works great on a 12-volt fan.
BuyerBill
2024-12-12 15:53:19
I liked that you have several voltage to operate the intended devise. Also it works well to control intensity of a vibration motor use on a miniature gravity conveyor.
KayRaf
2024-11-14 11:32:44
The speed control doesn't consistently work between the 2 I was given. The knob didn't fit tight and falls off.
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